Synthesis and electrochemical characterisation of benzyl mercapto and dodecylmercapto tetra substituted cobalt, iron, and zinc phthalocyanines complexes

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The work reports on cyclic voltammetry (CV), square wave voltammetry and spectroelectrochemistry of the following complexes: tetrakis (benzyl mercapto) phthalocyanine complexes of Zn(II) (ZnTBMPc, 4a ), Co(II) (CoTBMPc, 5a ), Fe(II) (FeTBMPc 6a ); and tetrakis (dodecylmercapto) phthalocyanine complexes of Zn(II) (ZnTDMPc, 4b), Co(II) (CoTDMPc, 5b) and Fe(II) (FeTDMPc, 6b). More reversible CV couples were observed for complexes 4a, 5a and 6a containing thiol phenyl ring substituents. Complexes 4b, 5b and 6b containing long chain thiol substituents showed less reversible couples. Complexes 6a and 6b showed a relatively large number of redox processes (5 for 6a and 6 for 6b) within the potential window employed in this work. The processes for FePc derivatives (6a) are assigned to FeIIIPc-1/FeIIIPc-2, FeIIIPc-2/FeIIPc-2, FeIIPc-2/FeIPc-2, FeIPc-2/FeIPc-3 and FeIPc-3/FeIPc-4 and for the CoPc derivative (5a) to CoIIIPc-1/CoIIIPc-2, CoIIIPc-2/CoIIPc-2, CoIIPc-2/CoIPc-2 and CoIPc-2/CoIPc-3.

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1. http://eprints.ru.ac.za/229/1/tebello.pdf
2. Nyokong, T. and Ozoemena, K.I. and Agboola, B. (2006) Synthesis and electrochemical characterisation of benzyl mercapto and dodecylmercapto tetra substituted cobalt, iron, and zinc phthalocyanines complexes. Electrochimica Acta, 51 . pp. 4379-4387. ISSN 0013-4686

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Identifer	oai:union.ndltd.org:Rhodes/oai:eprints.ru.ac.za:229
Date	January 2006
Creators	Nyokong, T., Ozoemena, K.I., Agboola, B.
Source Sets	Rhodes University SA
Detected Language	English
Type	Article, PeerReviewed
Format	application/pdf
Relation	http://eprints.ru.ac.za/229/